This document discusses several freshwater edible fish species commonly consumed in India. It provides details on the growth, breeding habits, and nutritional value of major carp species like Catla catla, Labeo rohita, L. calbasu, Cirrhinus mrigala. Other important freshwater fish discussed include catfishes, herrings, featherbacks, live fishes, mullets, and exotic species like Cyprinus carpio. Details on growth rates, fecundity, and maturity time are provided for many of the species.
Carps form the mainstay of aquaculture in India contributing over 85% of the total aquaculture production There are 61,259 species of vertebrates recognized world; over 30,700 are fish species of which 8,411 ore fresh water while 11,650 are marine. In India 2,163 spp. are fin fishes have been recorded from upland cold water (157; 7.26%) warm water of the plain (54; 20.99%), Brackish water (182; 8.41%) and marine environment (1,370; 63.43%). Some of these species are cultured at commercial level which covering a lot varieties of fin fishes The three Indian major carps, namely Catla (Catla catla), Rohu (Labeo rohita) and Mrigal (Cirrhinus mrigal) contribute the bulk of production to the extent of 75 to85 percent of the total fresh water fish production, the three exotic carp such as Silver carp (Hypophthalmichthys molitrix) and Common carp (Cyprinus carpio ), Grass carp (Ctenopharyngodon idella )form the second important group to incorporate several other medium and minor carp and into the carp poly culture system several method were used because of their region specific consumer preference and higher market demand.
History
Carp culture in India was restricted only to a homestead backyard pond activity in west Bengal and Odisha until late 1950 s with seed from riverine sources as the only input resulting low level of production the technological breakthrough breeding of carp through hypophysation in 1957 freshwater aquaculture of the country the country till 1984 virtually laid the foundation of scientific carp farming in the country.
Important characteristics of Indian major carps:-
Indian major carp grow fast and can reproduce even in artificial ponds. They feed upon phytoplankton, zooplankton, decaying organic matter, aquatic plant etc. stomach is absent in the alimentary canal of the major carps. Three types of Indian major carps are cultured in
Prawn farming plays an important role in the economy of India. Despite of several problems, the practice of prawn farming has offered opportunity to increase incomes for farmers and associated groups. The future for prawn farming is bright but requires dynamism to exploit fully. The realization of its potential must be aided by improvements in production technology and hatchery operation. In addition, research in areas such as seed and feed production may need to be given particular attention, considering existing technology, the transfer, adaption and development of new technology.
Fertilized fish eggs are known as Fish seeds. In simple words, they are the baby fishes used for seeding new Ponds in fisheries. Fish seed transportation is a process by which transfer of fish seed from the hatchery or place of collection to the rearing ponds.
Carps form the mainstay of aquaculture in India contributing over 85% of the total aquaculture production There are 61,259 species of vertebrates recognized world; over 30,700 are fish species of which 8,411 ore fresh water while 11,650 are marine. In India 2,163 spp. are fin fishes have been recorded from upland cold water (157; 7.26%) warm water of the plain (54; 20.99%), Brackish water (182; 8.41%) and marine environment (1,370; 63.43%). Some of these species are cultured at commercial level which covering a lot varieties of fin fishes The three Indian major carps, namely Catla (Catla catla), Rohu (Labeo rohita) and Mrigal (Cirrhinus mrigal) contribute the bulk of production to the extent of 75 to85 percent of the total fresh water fish production, the three exotic carp such as Silver carp (Hypophthalmichthys molitrix) and Common carp (Cyprinus carpio ), Grass carp (Ctenopharyngodon idella )form the second important group to incorporate several other medium and minor carp and into the carp poly culture system several method were used because of their region specific consumer preference and higher market demand.
History
Carp culture in India was restricted only to a homestead backyard pond activity in west Bengal and Odisha until late 1950 s with seed from riverine sources as the only input resulting low level of production the technological breakthrough breeding of carp through hypophysation in 1957 freshwater aquaculture of the country the country till 1984 virtually laid the foundation of scientific carp farming in the country.
Important characteristics of Indian major carps:-
Indian major carp grow fast and can reproduce even in artificial ponds. They feed upon phytoplankton, zooplankton, decaying organic matter, aquatic plant etc. stomach is absent in the alimentary canal of the major carps. Three types of Indian major carps are cultured in
Prawn farming plays an important role in the economy of India. Despite of several problems, the practice of prawn farming has offered opportunity to increase incomes for farmers and associated groups. The future for prawn farming is bright but requires dynamism to exploit fully. The realization of its potential must be aided by improvements in production technology and hatchery operation. In addition, research in areas such as seed and feed production may need to be given particular attention, considering existing technology, the transfer, adaption and development of new technology.
Fertilized fish eggs are known as Fish seeds. In simple words, they are the baby fishes used for seeding new Ponds in fisheries. Fish seed transportation is a process by which transfer of fish seed from the hatchery or place of collection to the rearing ponds.
Fish culture is classified based on the number of fish species as monoculture and polyculture. This is the culture of single species of fish in a pond or tank. The culture of trout, tilapia, catfish , carps are typical examples of monoculture.
Fishes, amphibians, reptiles, and birds have paired pharyngeal ultimobranchial glands that secrete the hypocalcemic hormone calcitonin. The corpuscles of Stannius, unique glandular islets found only in the kidneys of bony fishes, secrete a peptide called hypocalcin.
A short description about magur fish.The walking catfish (Clarias batrachus) is a species of freshwater airbreathing catfish native to Southeast Asia, but also introduced outside its native range where it is considered an invasive species. It is named for its ability to "walk" across dry land, to find food or suitable environments. While it does not truly walk as most bipeds or quadrupeds do, it has the ability to use its pectoral fins to keep it upright as it makes a wiggling motion with snakelike movements.[2] This fish normally lives in slow-moving and often stagnant waters in ponds, swamps, streams and rivers, flooded rice paddies or temporary pools which may dry up
The transfer of fish seed from the hatchery or place of collection to the rearing pond is called transport of fish seed. The seed fish include fry and fingerlings.
Fish culture is classified based on the number of fish species as monoculture and polyculture. This is the culture of single species of fish in a pond or tank. The culture of trout, tilapia, catfish , carps are typical examples of monoculture.
Fishes, amphibians, reptiles, and birds have paired pharyngeal ultimobranchial glands that secrete the hypocalcemic hormone calcitonin. The corpuscles of Stannius, unique glandular islets found only in the kidneys of bony fishes, secrete a peptide called hypocalcin.
A short description about magur fish.The walking catfish (Clarias batrachus) is a species of freshwater airbreathing catfish native to Southeast Asia, but also introduced outside its native range where it is considered an invasive species. It is named for its ability to "walk" across dry land, to find food or suitable environments. While it does not truly walk as most bipeds or quadrupeds do, it has the ability to use its pectoral fins to keep it upright as it makes a wiggling motion with snakelike movements.[2] This fish normally lives in slow-moving and often stagnant waters in ponds, swamps, streams and rivers, flooded rice paddies or temporary pools which may dry up
The transfer of fish seed from the hatchery or place of collection to the rearing pond is called transport of fish seed. The seed fish include fry and fingerlings.
A short description about catla fish.presentation on catla fish.which scientific name is catla catla,cyprinus catla & gibelion catla.this fish is very important for aquaculture.the growth rate is high and culture system of this fish is very easy.This freshwater fish has a good market demand also.
Fish Culture or fish farming involves raising fish commercially in tanks or enclosures, usually for food. It is the principal form of aquaculture, while other methods may fall under mariculture. A facility that releases juvenile fish into the wild for recreational fishing or to supplement a species' natural numbers is generally referred to as a fish hatchery. Worldwide, the most important fish species used in fish farming are carp, tilapia, salmon, and catfish.
Mud crabs, also known as mangrove crabs, occur widely in estuaries and along tropical, subtropical and warm temperate coasts in the world. There are four species of mud crab (Family: Portunidae), Scylla serrata, S. tranquebarica, S. paramamosain and S. olivacea that are the focus of both commercial fisheries and aquaculture production throughout their distribution. They are among the most valuable crab species in the world, with the bulk of their commercial production sent live to market.
Salient biological characteristics of some selected carps: imran nagarihn FreeStyle Corp.
A very large group of fish native to Europe and Asia.
Carp is a common name for various species of freshwater fish of the family Cyprinidae.
They have been introduced to various locations around the world.
FISH FARMING - ITS INCLUDES Fish Seed Production, Criteria for selection of suitable fish species, Groups of Freshwater Species, CULTIVABLE FISH SPECIES & FISH CUM DUCK FARMING
Clarias batrachus, commonly known as the walking catfish or Thai catfish, is a species of air-breathing catfish. Here's some information about the reproduction, breeding techniques, hormonal usage, and related aspects of Clarias batrachus:
1. Sexual Dimorphism: Male and female walking catfish can be distinguished based on certain physical characteristics. Males tend to have a larger size, broader head, and more prominent spines on their pectoral fins compared to females.
2. Breeding Conditions: Walking catfish are known to breed during the rainy season or when there is an increase in water levels. They typically prefer warm water temperatures.
3. Spawning Behavior: Walking catfish are nest builders, and males exhibit paternal care. The male constructs a nest by digging a depression in the substrate, often in muddy areas or among aquatic vegetation.
4. Hormonal Induction: In aquaculture settings, hormonal induction is commonly used to synchronize and stimulate breeding in walking catfish. Hormones like human chorionic gonadotropin (hCG), luteinizing hormone-releasing hormone analogs (LHRHa), or synthetic hormone analogs are used to induce ovulation in females and spermiation in males. The dosage and timing of hormone administration depend on factors such as fish size, maturity, water temperature, and breeding objectives.
5. Breeding Tank Setup: Prepare suitable breeding tanks or ponds for walking catfish reproduction. The tanks should have appropriate water conditions, including a temperature range of 25-30°C (77-86°F), pH around 7, and good aeration to ensure oxygen supply.
6. Hormone Injection: Hormonal injection is typically performed on female walking catfish to induce ovulation. The hormone is administered through intramuscular or subcutaneous injections. It is important to handle the fish carefully during the injection process to minimize stress and ensure proper dosage delivery.
7. Spawning Technique: After hormone injection, the female walking catfish is introduced into the male's nest. The male initiates courtship behavior by circling, nudging, and wrapping his body around the female. This stimulates the release of eggs by the female and sperm by the male for fertilization.
8. Nest Construction and Preparation: Male walking catfish construct nests by excavating depressions in the substrate. They may create tunnels leading to the nest for protection. Nests are usually built in shallow waters, often in muddy areas or among aquatic vegetation.
9. Egg Collection and Incubation: Once the eggs are fertilized, they adhere to the nest walls. The male walking catfish guards the nest and ensures adequate oxygenation of the eggs by fanning them with his pectoral fins. During incubation, maintain suitable water conditions and temperature for the eggs to develop.
Larval Rearing: After hatching, the walking catfish larvae have external gills and can breathe atmospheric air. Provide appropriate rearing conditions, including water quality, temperature.
Rotifers are popularly called as wheel animalcules. They are an important group of live food organisms for use in aqua hatcheries. Brachionus, which is the most known form of all rotifers, serve as an ideal starter diet for early larval stages of many fish and prawn species in marine as well as freshwater. Species of the genus Brachionus (Brachionidae: Rotifera) are well represented in different water bodies worldwide (Pejler, 1977). Depending on the mouth size of the cultured organisms, small (50 to 110 micron length) or large (100 to 200 micron length) rotifers are used. There are about 2,500 species of rotifers have been known from global freshwater, brackish water, and seawater. B. plicatilis is the species used most commonly to feed fish larvae in hatcheries around the world. It is a euryhaline species, small and slow swimming, with good nutritional value. It is well suited to mass culture because it is prolific and tolerates a wide variety of environmental conditions. The rotifer, B. plicatilis and B. rotundiformis, have been indispensable as a live food for mass larval rearing of many aquatic organisms (Maruyama et al., 1997). By way of significant developments in larval rearing technology of fishes, demand for the rotifer is further increasing.
Introduction of Fish and Fisheries of India.
• Freshwater Fish: Fish that spend most or all of their life in freshwaters, such as rivers and lakes, having a salinity of less than 0.5 ppt. Around 40% of all known species of
fish are found in freshwater.
They may be divided into Coldwater Fish (5-20 °C); examples: Mahseer, Trout, etc., and Warmwater Fish (25 35 °C); example: Carps, Catfish, Snakeheads, Featherbacks, etc.
• Brackishwater Fish: Fish that can tolerate a wide range of salinity (0.5 30.0 ppt)
and live in backwaters, estuaries and coastal waters.
Example: Mullet, Milkfish, Seabass, Pearlspot, Mudskipper, etc.
• Marine Fish: Fish that spend most or all of their life in seawater, such as Seas and
Oceans, having salinity above 30 ppt. There are about 240 species contributing to
the marine fisheries. Example: Sardines, Mackerel, Ribbonfish, Anchovies, Grouper, Cobia, Tuna, etc.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
1. FRESH WATER EDIBLE FISHES
Presented by
BALWANT SINGH
balwantsingh1642@gmail.com
DEPARTMENT OF APPLIED ANIMAL SCIENCE
BBAU, LUCKNOW-INDIA
2. INTRODUCTION
Fishes form one of the most important group of vertebrates for
man.
Fishes have formed an important item of human diet from the
man
Appeared on earth.
Fishes form a rich source of food and provide a means to tide
over the nutritional difficulties of man.
3. Fresh water edible fishes
The fish should be tasteful .
It should be have high nutritive value.
Species that can be culture together without
competing with each other.
It is able to highly preferable for maximum
utilization of water.
4. In order of importance, the principal fresh water fishes
Consumed as food in India, are listed below.
(a) Major carp:
Catla catla, Labio rohita, L. calbasu, Cirrhinus mrigala, and
Burbus sps.
(b) Catfishes:
Wollago attu, Mystus seenghala, M. cavasius, Bagarius bagarius,
Pungasius pungasius, Silonia silondia.
6. (g) Miscellaneous:
Labio bata, L. gonius, Schizothorax, Tor tor, Barilius,
Puntius, Nandus nandus.
(h) Exotic species:
Cyprinus carpio.
Bisides the fresh water fishes mentioned above a large
number of marine fishes are caught and used as food-
these
Are sardianes.
7. Catla catla
The species has the fastest rate of growth among the
Indian major carps.
In good nursery ponds, hatchlings of catla stocked at
the rate of 10,00000 to 12,50000 per hectare, grow to a
length of 20-25 mm in 15 days.
8. Catla catla
Catla attains maturity when about 2 years old.
In 5 kg female, a total number of 40,00000 ova were found
which gives the fecundity to be 80 eggs/g body weights.
9. Nutretive value of catla catla
S.N. NUTRITIONAL COMPONENT’S VALUE for 100 gm FISH
1. Energy (cals) 111
2. Moisture (gm) 74
3. Protein (gm) 19
4. Fat (gm) 02
5. Mineral (gm) 01
6. Fibre (gm) -
7. Carbohydrates (gm) 03
8. Calcium (mg) 530
9. Phosphorous (mg) 235
10. Iron (mg) 01
10. Labio rohita
Rohu also grows very fast but is relatively little slower than
Catla. They become mature in 1 year.
The hatchings of Rohu when stocked at the rate of 10,00000
to 12,50000/ha grow to a length of 25-30 mm in 15 days, and
the survival rate is 50%.
11. Labio rohita
In Rohu the average ret of egg is 1258/gbw.
The weight of Rohu is (33-45cms) 900 g in one year, 2-3 kg in
second year and 5-6 kg in third year.
12. Nutritive Value of Labeo rohita
ROHU - Nutritive Value Of Common Foods Value Per 100 grm. Foods
Energy (Kcals) 97
Moisture(gm) 77
Protein(gm) 17
Fat(gm) 1
Mineral(gm) 1
Fibre(gm) -
Carbohydrates(gm) 4
Calcium(mg) 650
Phosphorous(mg) 175
Iron(mg)
13. Lebio calbasu
Calbasu is a widely distributed carp and grows to a fairly
large size, but its rate of growth is slower than that of catla
and Rohu.
14. Labio calbasu
Calbasu grows to a length of 30-35 cms and a weight of 450
g by the end of first year.
The average number of eggs is 438/gbw.
15. Lebio bata
It is a medium sized carp and attains a length of 60 cm. it is
widely distributed in India and is often cultured with other
major carps.
The growth ret of Bata is 25-32 mm in one month.
16. Cirrhinus mrigala
This species is widely cultured in India along with other
carps.
It grows fast and fry when stocked at 10 lack to 12.5
lack/ha grow to 25-30 mm in length in 15 days.
17. Cirrhinus mrigala
Both the sexes mature when they are two years old.
For induced breeding ,they are mature in one year.
18. Cyprinuscarpio
The common carp is very widely distributed all over the
world, and three varieties of the fish are known.
The species becomes sexually mature at different times
depending on the climatic conditions.
19. Clarias batracus
The species reaches a length of 20 cm by the end of first
year, and a maximum length of 40 cm by the end of
second year.
becomes sexually mature by the end of one year.
Generally, 2000-5000 fry are collected from one nest.
20. Heteropneustes fossilis
The Asian stinging catfish or Heteropneustes fossilis, is a
species found in India, Bangladesh, Pakistan, Nepal, Sri
Lanka, Thailand, and Myanmar.
In India its called Singhi. H. fossilis is can tolerate slightly
brackish water. It is omnivorous.
21. Heteropneustes fossilis
This species breeds in confined waters during the
monsoon months, but can breed in ponds, derelict ponds,
ditches etc.
This species grows to a length of 30 cm (12 in) TL and is an
very important component of local commercial fisheries.
22. Wallago attu
Wallago attu is a species of catfish in the family
Siluridae.
It is locally known as Padhin and commonly called
Wallago.
It can reach maximum 2.4 m (8 feet) total length.
23. Wallago attu
This south Asian fish is found from India, Bangladesh,
Pakistan, Vietnam, Indonesia etc.
It is not good for culture because they consuming more time.
It is mature in minimum 2 years for breeding.
24. Channa sps.
Channa is a genus of the Channidae family of snakehead
fish.
Channa has a wide natural distribution extending from
whole India.
They are one of the most common staple food fish in
Thailand, Cambodia, Vietnam and other South East Asian
countries where they are extensively cultured.
It is mainly carnivorous but some omnivorous fish.
25. Channa sps.
Apart from their importance as a food fish, snakeheads
are also consumed as a therapeutic for wound healing
as well as reducing post-operative pain and discomfort,
and collected for the international aquarium pet trade.
In India most culturable sps. Of Channa is C. punctatus,
C. striatus, C. orientalis, C. marulius, C. melasoma, C.
gachua, C. argus, C. maculata etc.
26. Channa sps.
C. stratus
C. gachuaC. punctatus
C. marulius C. orientalis
C. maculata
C. argusC. melasoma
27. Nutritive Value of Channa sps.
Nutrition Nutritive Element
(Per 100g fish)
Protein 11.2g
Fat 2.3g
Iron 0.54g
Calcium 0.14g
Phosphorus 0.2g